Chicago often reveals itself through audacious changes: engineers reversed a river, a grounded boat grew into valuable land, the first controlled nuclear chain reaction hid beneath stadium stands, and a newspaper tower set fragments of the world into its walls.
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The Loop · Editorial illustration, not a historical photo
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Four Chicago footnotes
Short previews and public sources only. Read the complete collection in City Whisper.
01 · The Loop
The river Chicago reversed
In 1900, engineers made this river run the other way.
In the 19th century, Chicago dumped sewage into the river, which carried it into Lake Michigan, the city's drinking-water source.
The first controlled nuclear chain reaction occurred beneath a stadium.
On December 2, 1942, Enrico Fermi's team brought Chicago Pile-1 to criticality in a squash court under the university's football stands. It was humanity's first controlled nuclear chain reaction and a beginning of the Manhattan Project.